1. Cut your hair, Minh.

=> Your hair should be cut, Minh

2. Don’t play games too much

=> Games shouldn't be played too much

3. Answer my questions, Tien. 

=> My questions should be answered, Tien

4. Don’t waste your time to watch television too much. 

=> Your time shouldn't be wasted to watch television too much

 5. You may stop your work now. 

=> Your work may be stopped now

6. Could he forgive their mistakes?- Yes, he has forgiven them .

=> Could their mistakes be forgiven ?-Yes.......

7. The farmers ought to plant vegetables on their field.

=> Vegetables ought to be planted on their filed by the farmers

8. I need to recover my books. 

=> My books need to be recovered

9. Mary needs to finish her housework. 

=> Mary's housework needs to be finished

10. They don’t need to fill in the forms.

=> The forms needn't to be filled in

* Bị động của need có hai dạng: 

\(\left[ \begin{array}{l}Need+V_ing\\Need+to+be+V3/ed\end{array} \right.\)